document.write( "Question 391307: A motel clerk counts his $1 and $10 bills at the end of the day. He finds that he has a totalof 60 bills having a combined monetary value of $240. find the number of bills of each denmination that he has \n" ); document.write( "
Algebra.Com's Answer #277612 by vasumathiest@gmail.com(2)\"\" \"About 
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Let the $1 bills be x
\n" ); document.write( "Then $10 bills would be (60-x)
\n" ); document.write( "Total value is ....
\n" ); document.write( "1*x + 10(60-x)=x+600-10x=600-9x\r
\n" ); document.write( "\n" ); document.write( "but the total value is given and it is $240 so we have ....
\n" ); document.write( "600-9x = 240
\n" ); document.write( "add 9x on both sides
\n" ); document.write( "600-9x+9x=240+9x----->
\n" ); document.write( "600 = 240+9x
\n" ); document.write( "subtract 240 on both sides
\n" ); document.write( "600-240 = 240+9x-240
\n" ); document.write( "360 = 9x
\n" ); document.write( "divide both sides by 9\r
\n" ); document.write( "\n" ); document.write( "360/9 = 9x/9
\n" ); document.write( "40 = x\r
\n" ); document.write( "\n" ); document.write( "so the $1 bills are 40
\n" ); document.write( "and $10 bills are 60-40= 20
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